of joliet



March 8, 1932. c. M. DIBBLE FLUE CONSTRUCTION Filed May 27, 1929 Patented Mar. 8, 1932 D STATES PATENT OFFICE.

CLAUDE M. DIBBLE, OF JOLIE'I, ILLINOIS, ASSIGNOR TO MOORE BROTHERS COMPANY, OF JOLIET, ILLINOIS, A CORPORATION OF ILLINOIS FLUE CONSTRUCTION- Application filed May 27,

This invention relates in general to flue constructions and refers more particularly to an improved flue'outlet member of a flue for exhausting flue'gases from a stove.

L A primary object of the invention is to provide a flue construction for stoves with a flue outlet member which protects the outlet pipe and the finish thereon from excessive heat of the flue gases, thereby permitting the application of paint or other finishes to the exterior surface of the flue outletpipe without fear of subsequent damage to the finish due to the heat from the flue gases.

Another object of the invention is to provide a flue outlet member with means for protecting nearby walls and furniture from the heat of the flue gases being exhausted therethrough from a stove.

Still another object of the invention is to provide a flue outlet member with means for utilizing the surrounding air as an insulation between the flue gases and the flue outlet pipe and as a means for cooling the flue outlet pipe.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Referring to the drawings:

Figure 1 is apartial elevation of a stove and flue construction embodying the principle of the invention, and

Fig. 2 is a vertical section through the flue of Fig. 1, and shows a section of the outlet pipe above the broken extremity in Fig. 1.

For the purpose of describing this invention, a stove 11 having a usual exhaust outlet stub 12 is shown in Fig. 1. The flue outlet stub 12 is adapted to deliver the flue gases from the stove 11 to a horizontal flue inlet pipe 14 which telescopically engages the flue outlet stub 12 as shown at 13 and is suitably secured thereto by means of a screw and nut assembly 34. The horizontal flue inlet pipe 14 has two delivery openings 33 and 33, one of which is in the end of the pipe remote from the stove 11 and the other of which is formed through the upper portion of the pipe 14.

1929. Serial No. 366,124.

A flue pipe communicating with a chimney may be attached to either of the outlets 33 and 33 as convenience may render desirable, the unoccupied outlet being provided with a closure 16.

An opening 18 is cut in the lower portion of pipe 14 substantially below the delivery opening 33. A combination supplemental draft opening and back draft outlet member 19 partially closes the opening 18 and is substantially trough-shaped. The troughshaped member 19 is inserted in the opening 18 and is secured within the pipe 14 by means of rivets 35. This trough-shaped member 19 has an open end 24 below the bottom of the pipe 14. The other end of the back draft outlet member 19 is closed below the bottom of the pipe 14 by an end closure with a vertical portion 23 and an inclined portion 22. v The inclined portion 22 of the end closure is provided to guide flue gases in the' event of a back draft toward the opening-24 on the opposite end of the back draft outlet member 19.

A back draft baffle guide plate 15 is mounted within the flue inlet pipe 14 between the delivery opening 33 and the stove exhaust stub 12 by means of brackets 36 and rivets 17 This back draft baffle guide plate 15 is arranged substantially at 45 degrees to the horizontal and inclines down toward the inclined portion 22 of the trough-shaped member 19.

The operating delivery opening 33 is provided with a mounting collar 21 which in the present instance extends upwardly from the horizontal pipe 14 and which telescopically engages in an end of a flue outlet pipe 26. The flue outlet pipe 26 comprises a desired number of pipe sections having telescopic end relations as shown at 27, and is arranged to deliver the flue gases received from the stove 11 through the horizontal pipe 14 and the delivery opening 33 to the chimney. The pipe sections in accordance with this invention are provided with a decorative coating or finish, the lower one of which, i. e. the one connected to the stove flue outlet 14, requires protection in order that the finish or coating may not rapidly deteriorate because this damper ae iensection is subjected to the relatively higher heat at the flue outlet 14. A plurality of apertures 28 is made through the outlet pipe 26 and is arranged around the periphery of the pipe just above the upper end of the collar 21 for a purpose which will he more fully described hereinafter. The outer surface of the pipe 26 is or may be painted or other- Wise suitably finished, WWW

An inner pipe 25 of 811131161 diameter than the flue outlet pipe 26'is"arrangedconcentrically Within the outlet pipe 26. The pipe 25 has an outwardly extending flange 37 on one end which seats on the collar 21,,and has a plurality of brackets'29' arranged around he ente surfa e of. the upperend to. eprevi e asp-ape 3 between the pipe 25 an 72 T e p pe .2 separates the pipe 26 from the. ne gases upt i pei-ntwhe the mper-attired the gases has dropped below thedamaging point for, the finish 0.11 the outer surface of he pipe A usua dampe s uitab y mounted in t e pipe 25 and is arranged to provide outside means fbreontndlhg he The e efi ti h ef he chimney on he hape 1 etween-the c fi e trieUflue outlet p pes25 and -26, regard es of the damper 32, draws air from the m hrough th ape hires 28 and intoith spa e. 3 1, from where he air. isdra-Wn throug th flu outle pipe 26 totheehimneyend outside eft'heihu l ing- In. this manne a ee tinupus r u on of 0.01 air is provided etween th pipes "25 and ,v 26, thus providing hea insulat n a means for; cooling. the fiuebu et pipe a the end nearest the sto e. ltiwill be apparen tha he pipei26 is th s ma ntained at a comparatively low temperature and, therefore, the

painter finish. thereon isadequate -y prote te again t the heat tram t e u ga es and a the. same time he inner pip 2 whi woul orma y besuhjeetecl; to rel t i high' em: penatunes, is. reto led, So tha the temper ture isv not excessive or dam ging By virtuebf the :draft'aet-ion ef. thev'ehim: ney on thespa ce, 31 through ethe-zepenihgs .28, it may be said that the openings 28 provide supplementalventilation for. :the room and auxiliary draft openings for the chimney. It will be apparent also that the openingsQS, val-rile providing a means for the intake of cool air; also provide supplemental means of exhaust in the event ofaaiback draft.

t isihe i hfi'th h i reh efl d may of i s ttendan adienta eswi hehnd steed thei h 'egel @eles i fie z' and i w ll be pparen that various heeses be made ih ferm e n fit hti n h l arran eparts Withput from the sp r ;and, ieeiie eiiheinteehee s er fi i i s ma ia ad an a s, theeem h l emb dimen thereof .jo dtogether at adjacent ends, the lower- Inostof said pipe sections being joined to said flue outlet; and ineans Within said lowermost pipe-seetien Q PEOl fiQihga l Sfinish fr inth hea e the flue ea es, sa d mea s ;.e0mp s 1s a p pe arranged W' hi aid 19Wfii IlQ P P section and provid ng an air spaee hetW-eeh sel and said. p pe seetioh- The mhi-na ien vi? a s ove, ha ing e flue. u et p uhality 10f pipe, seeeiens p ovide w th a decorative hea ing o fi ish. j ined og the a adj ent ends, the lowe mestbf said pipe. seehensh hs ieihed t sa d flue .quh et, andmean tor p eridihg eh eek t o a mQsph -ie ai W t in the leire mestp pe sect-ion to insulate said from the intense heat he ifiiie gases C AUDE M- bef re descri e-e1 eing merelw m i er a 

